-58.75% is the change from 240 to 99
Calculation steps:
[( 99 - 240 ) ÷ 240] x 100 = -58.75%
Formula
Percentage change = [(99 - 240) / 240] x 100
Subtract the new number by the original number
99 - 240 = -141
-141 ÷ 240 = -0.5875
-0.5875 x 100 = -58.75%